Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2006-01-03
2006-01-03
Pham, Chi (Department: 2667)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
Reexamination Certificate
active
06982992
ABSTRACT:
In transmitting first information necessary for gaining synchronism of transmission signal and second information which is the other information by determining a break of a single modulation unit with a simple structure and processing prior to Fourier transformation on the side receiving a signal transmitted as a multi-carrier signal, a transmission symbol stream is expanded on a frequency axis. With a predetermined frequency position (for example, 0 kHz) as reference, a transmission symbol stream symmetrical is generated on the frequency axis and then, the transmission symbol stream symmetrical on the frequency axis is Fourier-transformed and transmitted.
REFERENCES:
patent: 6181714 (2001-01-01), Isaksson et al.
patent: 6292651 (2001-09-01), Dapper et al.
patent: 0 886408 (1998-12-01), None
Jones Prenell
Maioli Jay H.
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